The commonly used generator for wind power plant application is an asynchronous or induction generator. Unlike synchronous generator, the electrical rotational speed of the rotor of an induction generator is higher than the synchronous speed or grid frequency. Like induction motors, induction generator consumes reactive power from the grid. According to “Wind turbines: fundamentals, technologies, application, economics” by Erich Hau, the typical power factor of a wind turbine generator is 0.87 leading (absorbing Mvar).
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